Valve mechanism.



J. T. MORRISON. VALVE MEGHANISM.

APPLICATION FILED APR. 1v, 1912.

Patented June 9, 1914.

&

UNITED- strATEs v'rainn'r OFFICE.

` specification of retten 11mm.

Patented June 9, 1914,.

Application Atiled Aprill?, 1912." Serial No, 691,498. l

To all 'whom it may concern; Be it known that I, JOHN T. MomusoN, a citizen of the United States residing at' Minneapolis in the county of lilennepin and State of Mlnnesota, have' invented certain new and useful Improvements in Valve Mechanism; and I dohereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledl in the` art-,to which itapper` tains to make and u'seithe same.`

My invention has for its particular-object 'the provision of an improved valve seat for` various different kinds of valve mechanlsms,

such, for instance, as faucets, bibs, ball cocks or tank valves, globe valves and the like, and to such ends, generally stated, the invention consists of the @novel construction and arrangement of, parts hereinafter de-` The numerals 1 and 2 indicate, res ec tively, the base and head sections of the aucet, which parts are connected in the usual way by a telescopically threaded joint 3. Both of the said sections l and 2 are tubular and from a broad point of view, constitute or make what may be treated as a valve casing. The section 1 has an internal annular clamping shoulder 4 and the section 2 has an enlarged intermediate portion, from one side of which a nozzle pipe 5 is extended.`

At the lower portion of its enlarged intermediate portion, the said head section 2 is formed with an internal annular clamping shoulder 6. The upper end of the head section 2 is made solid or'integral with the body thereof and is provided with a tubular 4threaded stufiing box 7. The valve proper is formed by 'a conical lower end 8 of a valve stem 9 that entends through the stuffing box 7 and through the upper end of the head section 2, and has threaded engagement at 10, with the latter. A hand piece 11 is detachably secured to the upper end of the stem 9, preferably, in the customary Way `by to the drawings, Figure 1 is ay that with .this construction, the upper end of the head section 2 may be cast mtegral with the body thereof, thereby eiectin economy 1n construction, and when the han piece-1l is detached from the valve stem 9 meansh'of. a screw 12. It may be here noted and the head piece detached from the base 1, the said va ve stem may be screwed inwardly and removed through the open lower end of the said section 2. This 1s a novel andimportant feature which, however, in many applications of my im roved valve seat, presently to be describe will not be em loyed.

n accordance with the princi al feature sof this invention, I employ a tu ular valve seat-13 which is seated partl in each of the sections f1 and 2 and is clampe against and between theshoulders 4 and 6 of the said mem- \bers.1 and 2. -This ,tubular valve 13 is constructedof metal that is non-corrodible in water and which is pliable or relatively soft as compared with the coperating valve. For instance, the valve 9 will be made of brass, and the tubular valve seat 13 of Babbitt, lead, copper or any other well known relatively soft or pliable and n0n corrodible composition of materials. This tubular valve 13 is also reversible end for end. The tapered or conical valve 8 will, therefore, seat itself always with a tight joint in the upper end of the valve seat, and

the force apxplied to the valve seat will tend to expand t e same 'and more tightly seat the same in the head section 2 of the faucet. When the shoulders 4 and 6 of the faucet sections 1 and' 2 are tightly 4screwed against the ends of the said relatively soft or pliable metal valve seat 13, its tight joints will be formed so that there will be no leakage of Water around the exterior of the said valve seat. In some instances, a pliable washer of leather, rubber orsimilar material indicated at 14 is interposed directly between the annular shoulder 4 and the lower end of the reversible tubular valve seat 13. When the tubular valve seat 13 is made of very pliable or soft metal, the washer 14 may be vdispensed with, but it is desirable because it gives an adjustability which permits the sections 1 and 2 to be brought together until there is a closed joint at the point marked 15 on Fig. 2. The so-called pliable tubular valve seat is not elastic like rubber or composition including rubber, and elasticity is not a desirable feature. The pliability is desirable because it permits of a. `self-seating` action between the valve and seat which will always be maintained by wear, and furthermore, it permits the use of tubular valve seat of such diameter that it may be easily in serted into the seat provided therefor in the members 'ofi the faucet or other valve easing,` and L thisy valve seat, under the expanding, pressure of the valve, will be thereafter ex .panded for a close engagement withthe surrounding casing, thereby further insuring a water-tight joint. The clamping action on the ends of the tubular valve seat produced by the shoulders/1 and. 6 is, however, primarily relied upon to form watertight joints, and this latter action is linsured iwhen 'the tubular valve seatis of a metal that is pliable or relatively soft, alsoas compared with the metal employed in theseetions 1 and 2and,

. of any desired length. Inasmuch as this valve seat is relatively a pliable member, it will, of course, berworn away much faster than the valve, but when too greatly worn at one end, it may be reversed end for end,

and the length of its life thereby doubled.`

Byl reference to Fig. 2, it will be noted,

that when the two seetionsof the valve casing are separated and the valve is screwed downward or against the valve seat 13, the

latter will be forced endwise out of thesection 2 towhich the said valve is applied.

What I claim is:

The combination witha valve casing-made e up of` separable sections and provided with.' opposing internal; shoulders and having a uniting oint located between said shoulders, of a tu ular -valve seat loosely Q telescopecl into said casing and made entirely oity ductile or non-elastic metal;v and having tight joints of said casing and a valve ,Working through one of the sections of said casin with endwise and rotary movement, lan conical end adaptedto engage the adjacent end of said tubularseat, andlunder'its seating movement serving to maintainv a tight joint with said valve seat, the said valve being of a much harder metal thanl the valve seat.v i

Intestimon whereof I 'affix my signature i in Apresence o 'two witnesses.

JOHN T. MORRISON.. Witnesses:

A'Hamm' D. Krmonn, t M iLDnED L.- MUMMS.

between itsends andthe internal shoulders 

